000			00303nam a2200133Ia 4500
008			241129s9999 xx 000 0 und d
100			_aKrishnamoorthy Bala
245		0	_aEnvironmantal Management
250			_a2nd
260			_bPHI learning pvt ltd
260			_c2009
300			_a486
942			_cBK
999			_c21359 _d21359